package com.TestInterface;


/**
 * @Package: com.TestInterface
 * @ClassName: MyDataImpl
 * @Author: h2cloud
 * @CreateTime: 2021/4/14 9:52 下午
 * @Description:
 */
class MyDataImpl implements MyData {
    public boolean isNull(String str) {
        System.out.println("Impl Null Check");
        return str == null ? true : false;
    }

    public static void main(String args[]) {
        MyDataImpl obj = new MyDataImpl();
        obj.print("");
        obj.isNull("abc");
    }
}

